Answer:about 30%
Step-by-step explanation:
Taiga first is also known as boreal forest,it is the world's largest land biome this accumulate to about 30% coverage of all earth forest.
It covers a wide percentage of land
this range from North America,northern contiguous United States, Eurasia, Russia, Norway, Estonia, Scottish Highlands, some lowland/coastal areas of Iceland, northern Kazakhstan, northern Mongolia, and northern Japan.
The trees grown, temperature and length of the growing season are not the same across the word it varies. In North America spruce is majorly found in tiaga while Scandinavian and Finnish consists of spruce, pines and birch.